Start with the documented color character
Sea Serpent is a very dark navy. Temperature is a useful description, but neighboring materials can change the impression. Sea Serpent's very low reflectance supports a dark navy backdrop, with a black-like appearance possible in weak illumination.
Why the white shelves and cognac leather relationship matters
Cognac leather and white shelving can keep the room legible, even when the darkest painted areas show little obvious blue.
Sea Serpent has an LRV of 7; Sherwin-Williams Cyberspace SW-7076 is 6. The difference is 1 points, with Sea Serpent returning more light under the reference measurement. Cyberspace is a cool charcoal black with a very low reflectance value. This supplies a named color control; the LRV gap alone does not identify the warmer, greener or pinker paint.
Use Cyberspace as a control
Temperature is easier to assess when Sea Serpent has enough light to show its hue. Check a lit panel beside the actual metal or wood, then inspect the shaded section. A very dark surface may function mainly as an outline even when its published color description has a distinct temperature.
Separate a persistent cast from a comparison effect
Plan for a nearly black appearance in weak light and check whether the shelf edges remain readable. The undertones and neighboring colors covers that related choice.
Judge the temperature description against the full white shelves and cognac leather arrangement. A warm or cool label is a useful starting category; it cannot guarantee that Sea Serpent agrees with every material assigned the same label. The wood-floor pairing guide covers that related choice. Before ordering samples, compare room-planning features in the paint color visualizer roundup.
Sources & notes
Color specifications: Sherwin-Williams Sea Serpent SW-7615. The recorded LRV is 7. Named comparison values come from the respective manufacturers; material schemes are editorial suggestions.
This guide reviews published color information and proposes practical sample checks. It does not claim first-hand paint testing or customer-review scores. Sherwin-Williams does not sponsor or endorse this site. Product names and trademarks belong to their respective owners. Confirm the color in a physical sample and select the coating for the actual surface and finish.

